Error model of the tangent method CNC aspheric machine tool based on multi-body system theory

Based on the theory of multi-body system, for the tangent method CNC aspheric machine tool, the paper shows out the topological structure and the array of low-order body of the system, the modeling process is stated, a specific mathematical expression for the comprehensive error model is established, and it will be a steppingstone to the error compensation for the machine tool.